One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,11,6,10,20,22,7,9,19,25,4,18,13,28)(3,12,16,27,17,23,30,31,15,26,29,32,14,8,21,24)(1,3,13,21,4,14,19,29,7,15,20,30,6,17,5,16)(2,8,22,27,18,26,11,24,9,23,28,32,10,12,25,31)(8,23)(12,26)(24,31)(27,32) involution — undirected(2,9)(3,14,15,17)(5,19)(8,12,23,26)(10,18)(13,20)(16,30,29,21)(24,32,31,27)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.